Armature for magneto-electric machines



(No Model.)

F. H. BEERS.

ARMA'TURE FOR MAGNETO ELECTRIC MACHINES.

No. 257,432.. Patented May 2,1882.

UNITED STATES PATENT OFFICE.

FRANKLIN H. PEERS, OF NEWARK, NEW JERSEY, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO THE METROPOEITAN ELECTRIC LIGHT AND POWER OOM- PANY OF THE UNITED STATES, OF NEW YORK.

ARMATURE FOR MAGNETO-ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 257,432, dated May 2, 1882.

Application filed January 11, 1882. (No model To all whom it may concern which the insulateduvire bobbins i 'i are wound Be itknowu that I, FRANKLIN H. llamas, of are rectangular; but the outside of the sides It Newark, Essex county, State of New Jersey, h are inclined to such an extentas to leave a have invented certain newand useful Improvesmall space between the adjacent sides of the 5 ments in Armatures for Magneto-Electric Masections when they are secured to the flanges chines,ofwhich the following is a specification. dot the end pieces by means ot'screws, which I This invention relates to the construction of pass through the bottom of the sections into the paramagnetic bodies ofarmatnres for magsaid flanges. The sides It 71. project beyond the neto-electric machines, and has for its objectto end pieces to t'orm guides for the wire-bobbinsi 1o reduce and eliminate the heat generated in the 1?. After the sectionsc are secured to the flanges same and in theinduction-wire wound thereon, d of the end pieces sot't iron wirejj is wound 6o andtoincreasetheefi'ectivenessofsaid machine. in the transverse slots 9 g, leaving spaces My invention is principally applicable to arbetween the top of said winding and the matures of Siemenss type; and it consists in bottom of the channels, as shown. This soft- I5 making the body of the same in longitudinal iron wire wound in the slots gg forms the only sections, provided with channels for the recepmagnetic connections between the channeled t tion ofthe insulated induction-wire and transsections a, and between their adjacent sides I verse groovesin which is wound soft-iron wire, propose to place strip is k of heat-insulatin g said iron wire forming the only magnetic con material, so as to prevent as much as possible 20 nection between the sections. The sections the conduction ot'heat from one section to anat their ends are secured to two open diamagother, as I have found in practice that in armanetic end pieces, which are provided with ribs tures of this class some parts will heat much so shaped as to lie along the shaft, and over more quickly than others. I have also found which the ends of the longitudinal insulatedthat the greater part of the heat appears to be 25 wire bobbins are wound, the spaces between generated in the parts of the wire of the inducsaid ribs forming air-passages, so as to allow a tion-bobbinswhich cross over theend ot' the cylfree circulation of air through and between the inder, and it is to eliminate this heat that the ends ofthe bobbinsand longitt'tdinallythrough radial arms 0 ot' the end pieces are extended thebodyof the armature. The transverse slots along the shaft (1, the wire of bohbinst' i being 0 in the channeled sections also allow the air to wound,as shown at Fig. 3, over said extensions circulatethrough theperipheryot'the armature. 0, so that plenty ot'aii space is formed through Figure 1 of the accompanyingdrawings repand between the ends of the various bobbins resents an armature constructed according to i "5, thus providing means for the radiation of my invention, partly in section and partly in the heat, and also for a free circulation of air 5 elevation. Fig.2isatransverse sectional view through the body of the armature. The air of the same, cut through the line m :r. Fig. 3 also circulates over the iron wlrej and through is an end view. Fig. 4 is a side elevation of the periphery by the slots g I one of the paramagnetic sections, and Fig. 5 The channeled sections .0 are cast in one is an end elevation-of the same. piece of metal, of the shape shown and de- .40 To the shaft a are secured the two end pieces scribed, either of cast or malleable iron or castof the diamagnetic material, composed of the steel. Cast steel of the kind known as de- 0 hub b, radial arms 0 c, and tlange (I. These carbonized steel 1 have found to be of sucha radial arms 0 c extend outward, as at c c, to nature as to readily assume and give up mag- Hie along the shaft a. netie properties, and to answer betterthan oth- 45 The paramagnetic part of the armature is er kinds of east paramagnetic metalin some re composed of the channeled sections 0, having spects for armatures ot' magneto-electric ma- 5 flanges f at their under sides. Transverse chines. :slots g g extend through the sides h h and It is obvious that the end pieces having the partly through the flangef. The channels in extended ribs 0 0 may be used in combination with cylindrical armatures in which the paramagnetic parts are constructed difl'erentl y to what is here described, and also that my improvements in the construction of the paramagnetic parts may be used with other forms of end pieces.

The manner of connecting up the bobbins of this kind of armature and the relation thereof to the exciting or field magnets of the machine are so well known that I have omitted showing the same in the drawings, restricting myself to a description of what I claim and desire to secure by Letters Patent, viz:

1. An armature composed of, channeled sections for the reception of the induction-wire, secured at their ends to end pieces and provided with transverse grooves, in combination with sections of iron wire wound in said transverse grooves, substantially as and for the purpose set forth.

2. In an armature of the Siemens type, radial ribs extending from the end pieces along the shaft thereof, in combination with the bobbins of insulated induction-wire, substantially as and for the purpose set forth.

3. In combination, the channeled sections 0 a, secured at their ends to end pieces and provided with the transverse grooves g g, the iron wire jj, and strip is 7c of heat-insulating material, snbstantially as and for the purpose set forth.

4. In combination, the shaft (I, end pieces composed of huh I), flange d, end ribs, 0 a, channeled sections a e, and bobbins i i of insulated wire, substantially as set forth.

5. In combination, the sections 0 0, formed substantially as shown, the iron wirejj, the end pieces, I) c c d, and shaft a, as set forth.

In witness whereof I have hereunto set my hand, at New York, county and State of New York, this 10th day of January, A. D. 1882.

FRANKLIN H. BEERS.

In presence oi' \VILLIAM S. BIGBY, ALFRED SHEDLOCK. 

